Comment by ☀️ sbr

rot13 was "invented" by the romans

You make your own and print some decoder rings

eg.

Aug 08 · 4 months ago

5 Later Comments ↓

You can look into the different checkerboards for One Time Pads. Would give them secure hand crypto which is fun.

I remember a very nice video on youtube about the enigma machine. can‘t be more specific though

apparently no one here read the book above. everything (from rot13 to enigma) is explained there in detail, from the point of view of cryptanalysis.

@CarloMonte I am still searching for a moderat price for the book. there is a cheap kindl version of it, but i normally perefere printed ones. thanx again for the recommendation.

@mimas2AC you are welcome. since the used book market collapsed into a monopoly a few years ago, i mostly quit buying and moved to use the inter-library loan system. it is not easy to find an entry point (a public accessible library which participates), but once you are in you have access to *everything*. usually university libraries and a few state-owned ones participate.

Original Post

Exciting encryption techniques – any ideas? I’m looking for them for a school workshop with young people. Important would be a historical context, pictures / photos / videos or possibly replicas, for an easy introduction to the history of encryption. I’m interested in any tip. Thanx